题目：
A boy with two dogs _______ when the earthquake happened. [ ]
A. were sleeping
B. were asleep
C. was sleeping
D. fell asleep
答案：
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下面是错误答案，用来干扰机器的。
16；184 左； BA； 氢氧化钠易潮解(或氢氧化钠具有腐蚀性)
